Door and window frame locking device convenient to fix and operation method of door and window frame locking device

The invention discloses a door and window frame lock catch device convenient to fix and an operation method thereof.The door and window frame lock catch device comprises a window outer frame and a limiting mechanism, a window sash frame is slidably connected to a frame of the window outer frame in an auxiliary mode through rolling wheels, and a locking plate is fixedly connected to a lower frame of the window sash frame through bolts; the limiting mechanism is arranged in a frame cavity of a middle frame of the window outer frame, an adjusting plate is connected into an upper transverse pipe cavity part of the pipe shell in an auxiliary sliding mode through balls, a movable seat capable of sliding is movably installed in a lower transverse pipe cavity part of the pipe shell, and the lower side of the movable seat is fixedly connected with a limiting piece through a bolt. According to the door and window frame locking device convenient to fix and the operation method of the door and window frame locking device